Deep well pump



A. w. BuRKs 2,078,480

DEEP WELL PUMP Filed Deo. 25, 1955 2 Smets-snee@u 2 TH.- I J-dn r gw II April 27, 1937.

Illll llllll ll 'MHUHE SIN..

Il Ik;

Patented Apr. 27, 1937 UNITED STATES PATENT OFFICE 9 Claims.

This invention relates to a deep well pump and concerns itself with certain novel features some of which are applicable to any pumping or reciprocating structure desiring a straight line motion.

It is an object of this invention to cause the reciprocating pump rod to maintain a true rectilinear or straight line motion.

It is a further object of this invention to facilitate the supplying of air for maintaining an air cushion in the storage tank.

Itis also an object of this invention to improve the bearing of the pump actuating mechanism and cheapen the cost thereof.

With these and other objects in view, this invention comprises the novel structure and combination of parts hereinafter described and more particularly pointed out and dened in the appended claims.

2 In the accompanying drawings, which illustrate a preferred form of this invention and in which similar reference numerals refer to similar features in the different views:

Figure 1 is a sectional view through a deep well pump involving this invention showing parts in elevation.

AFigure 2 is an enlarged fragmentary sectional view of the pump.

Figure 3 is an enlarged fragmentary sectional view taken substantially upon the line III-III of Figure 1 looking in the direction of the arrows. In the drawings, there is shown the upper parts of a deep well pump including the operating mechanism and an air compressor,v parts in connection with which this invention is more particularly concerned. The well casing I is shown asv threaded into the lower portion of a cylindrical chamber 2 which houses the air compressor 3 and the pump guide sleeve 4. This chamber has a discharge pipe 5 extending from the lower end thereof. The guide sleeveA4 is supported in a. socket member 6 which has portions overlapping the upper end of the wall of the chamber 2. This overlapping portion is enlarged, as indicated at 1, and the wall of the chamber 2 has an inwardly extending ledge 8 upon which said enlargement rests.

The pump rod 9 which extends through the guide sleeve or tube 4 is pivoted at its upper end 5o to a walking beam l0 which may consist of two arms Ilia and |011, as shown in Figure 3. The

rear ends of the arms which are provided with inwardly directed flanges or shoulders II are arcuate as indicated at I2 in Figure 1, and these ,55 ends extend downwardly a considerable distance for a purpose to be later set forth. The arcs I2 upon the rear ends of these arms are struck from a center that coincides substantially with 4the pivot pin I3 that connects the pump rod to said beam'. 5 A casing I4 encloses the walking beam and the operating mechanism therefor. A shaft I5 is journaled in said casing and the shaft is provided with an eccentric I6 around which there extends 'a hardened fiat and ground steel hoop I1 that forms a bearing bushing for the eccentric strap or loop I8 upon the lower end of the operating pitman I9 which extends between the arms of the walking beam and is pivoted thereto by a pivot pin 20 intermediate the ends of such beam. 15

This bushing is preferably formed from a thin flat piece of hardened and ground steel, similar to a piece of clock spring which is forced'into a circle.

The rear end of the casing I4 has an upper out- 20 Wardly oiset portion 4|4a which in thepresent instance is shown as consisting of a separate member secured to the other portion of the casing. This offset portion of the casing is formed to provide an interior guide groove 2|, as clearly shown in Figure 3. A radius link 22 is pivoted in the lower end of the guide groove 2| by means of a pivot pin 23. The upper end of this link is pivoted to the upper rear end of the walking beam, as indicated at 24. The pivot pins I3, 20 and 24 may be constructed to maintain the arms Illa and Illb in proper spaced relation, or suitable spacers may be used, an expedient that is well-known. The link 22 is provided with an intermediate guiding' portion 25 that slidably extends into the aforementioned groove 2|. It will also be noted that this guide portion 25 also passes between the ends of the shoulders II ofi/the walking beam.

A long bolt 26 which is fastened in the offset portion Illa of the casing extends through the guide portion 25 of the link 22 and a considerable distance inwardly thereof for supporting a coil spring 21. The spring 21 surrounds a sleeve 28 which is supported upon the hub 29 of a nut 30 secured upon the end of the bolt, and upon a plug 3| slidably mounted upon the bolt 26. It will be noted that the nut 30 and plug 3| respectively have radial flanges 32 and 33 between which the coil spring is confined.

It will be noted that the plug 3| abuts the guide portion of the link 22 and is normally forced thereagainst by the spring 21. This tendency of the spring will normally force the link 22 rearwardly for maintaining the arcuate 55 end of the walking beam against the casing, as shown in Figure 3. In other words, the arcuate end of the walking beam will be forced to rock against or in contact with the casing portion Illa. The arcuate end of the walking beam is made of sufllcient extent so that it will be in engagement with the casing during a complete reciprocation of the pitman i9. As the arcuate end of the walking beam is tied to the link 22 it will be evident that it can only move bodily upon an arc struck from the pivot pin 23 with the result that the pivot pin I3 will be constrained to travel in a straight line. In other words, it will travel in a plane parallel to the casing portion Ila. For imparting a rotary movement to the shaft I5, a gear wheel 34 may be secured thereto and driven by a pinion 35.

In referring now to Figure 2,it will be observed that the air compressor 3 comprises a sleeve supported in the boss 1. This sleeve is closed at its lower end by a cap 36 having air vents 31 and a disk valve 38 which normally rests below said air vents. The interior diameter of the sleeve is enlarged from an intermediate point to the top, as indicated at 39, for a purpose that will later appear. Within the sleeve, there is a piston 40 which may be made of leather or any other suitable material. to a rod Il having a series of apertures 42 (Figure 1) at its upper end by means of which said rod may be adjustably secured to an extension 43 on the Walking beam.

During the operation of the pump, air will enter through the top of the air compressor sleeve and pass around the piston due to the enlargement. As the piston descends below the enlargement, the air will be compressed and forced through the vents 31 into the fluid. When the piston is elevated, the valve disk 38 will rise until it abuts the lower end of the compressor sleeve, in which position it will close the air vents from above. When the piston has risen into the enlargement of the sleeve, air can again pass the piston for compression on the down-stroke thereof. 'Ihe required amount of air can thus be forced into Vthe chamber 2 lfor accumulating above the discharging water therein for cushioning the same and the changes in velocity thereof. This air chamber avoids the necessity for the usual air chamber in the discharge pipe.

The compressor rod 4I may be adjusted to vary its stroke. 'I'his variation of the stroke will vary its extent of travel in the enlargement of the compressor sleeve and thus may,be varied the volume o1' air compressed.

It will be apparent from the foregoing that a novel structure for obtaining reciprocating rectilinear motion has been invented that is not apt to get out of order or lose its eillciency, and that is especially adapted for deep well pumps.' At the same time, it will be appreciated that an air chamber has been provided with a novel air compressor therein for creating an air cushion above the water in such chamber as it discharges through pipe 5.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than is necessitated by the prior art.

I claim as my invention:

1. The combination with a reciprocating rod, of a walking beam having a pivotal connection This piston is attachedl with said rod, said walking beam having a rear arcuate end struck lfrom said pivotal connection as a center, a casing in abutting relation with said arcuate end, yielding means for maintaining said abutting relation between said arcuate end and casing including a radius link pivoted to said casing and to the rear end of said walking beam, and means for operating said walking beam.

2. Operating mechanism for a reciprocating rod comprising a walking beam having a pivotal connection at one end with said rod, a radius link pivoted to the other end of said beam, yielding means urging said radius rod in one direction, a member having a surface in contacting relation with the rear surface of said beam, one of said surfaces being arcuate, and means for operating said Walking beam.

3. Operating mechanism for a reciprocating rod comprising a walking beam having a pivotal connection adjacent one end with said rod, said walking beam having a rear arcuate end struck from said pivotal connection as a center, a casing having a guideway and a surface in contacting relation with said arcuate end, a link pivoted to said casing in said guideway and having a pivotal connection with said walking beam, and yielding means acting upon said link for maintaining the arcuate end of said walking beam against said surface, and means for operating said walking beam.

4. Operating mechanism for a reciprocating rod comprising a walking beam having a pivotal connection with said rod, said walking beam having an arcuate surface at one end struck sub-` stantially from said pivotal connection as a center, means defining a surface in contacting relation with said arcuate end, means for movably supporting and yieldably urging said arcuate end against said surface, and means for operating said walking beam.

5. The combination with a reciprocating rod, of a walking beam having a pivotaly connection therewith and having an arcuate rear end, a casing member having a guideway and shoulders adjacent said guideway in abutting relation with said arcuate end, a link pivotally connecting the arcuate end of said walking beam to said casing. said link having a guiding portion extending into said guideway, a rod secured to said casing and passing through said guiding portion, a spring on said rod bearing against the guiding portion of said link, and means for operating said walking beam.

6. 'I'he combination with a reciprocating rod., of a walking beam having a pivotal connectiony with said rod and having a rear arcuate end, a

casing having a bearing surface in abutting rela-l tion with said arcuate end,y a link connecting said arcuate end to said casing, means for guiding said link, yielding means acting against said link to maintain said arcuate end against said casing and means for operating said walking beam.

7. Operating mechanism for a reciprocating rod comprising a walking beam having a pivotal connection atone end with said rod; the other end of said walking beam having an extended arcuate surface struck substantially from said pivotal connection as a center, a casing having means defining a surface in contacting relation with said arcuate end, a radius link pivotally connecting the arcuate end of said beam with said casing, means for guiding the arcuate end of said beam for movement in a vertical plane in contacting relation with said surface and means connected at an intermediate point to said beam for operating the same.

8. Operating mechanism for a reciprocating rod comprising a walking beam. pivotally connected at one end to said rod, the other end of said Walking beam having an arcuate surface struck from the pivotal connection with said rod as a center, a casing surrounding said mecha- 10 nism and having an interior bearing surface in contacting relation with the arcuate end of said walking beam, yielding means for urging said arcuate end against said surface including a radius link pivotally connecting the arcuate end of said beam with said casing and means for operating said beam.

9. The combination with areciprocating rod, of a walking beam having a pivotal connection with said rod and having a rear arcuate end, a casing surrounding said walking beam and having a bearing surface in contacting relation with said arcuate end, a radius link pivotally connecting said casing with the arcuate end of said beam, yielding means acting on said link for maintaining said arcuate end in contacting relation with said bearing surface and means for operating said beam.

AR'I'HUR W. BURKS. 

